You're saying that if you returned to this code months later: "float speed = 20 // set speed to 20;" You wouldn't be able to figure out what it's doing without the comment?
Amazon shifts Lumberyard to open source 3D game engine supported by 20 companies https://venturebeat.com/2021/07/06/amazons-lumberyard-becomes-an-open-source-3d-game-engine-with-support-from-20-companies/ https://www.youtube.com/watch?v=6ccjR9qI5YU